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Numéro de publicationUS7940849 B1
Type de publicationOctroi
Numéro de demande11/842,717
Date de publication10 mai 2011
Date de dépôt21 août 2007
Date de priorité
25 août 2006
Inventeurs
Jing Fang
Runsheng He
Kok-Wui Cheong
Cessionnaire d'origine
Marvell International Ltd.
Marvell Semiconductor, Inc.
Classification aux États-Unis
375/260
Classification internationale
H04L27/28
Classification coopérative
H04L27/2675
H04L27/2657
H04L27/2678
H04L27/2662
Classification européenne
H04L 27/26M5C3
H04L 27/26M5C5
Références
Liens externes
USPTO
Cession USPTO
Espacenet
Method and apparatus for estimation of carrier frequency offset and/or sampling frequency offset
US 7940849 B1
Résumé

In a method for determining timing information in a receiver, a first signal is analyzed to determine a first phase difference with respect to different portions of the first signal, and a second signal is analyzed to determine a second phase difference with respect to different portions of the second signal. The second signal is a frequency domain representation of at least a portion of the first signal. An indication of a carrier frequency offset and a sampling period offset are generated based on the first phase difference and the second phase difference.

Citations de brevets
Brevet cité Date de dépôt Date de publication Déposant Titre
US200401095089 juil. 200310 juin 2004Ahn Jae-YoungMethod and device for tracking carrier frequency offset and sampling frequency offset in orthogonal frequency division multiplexing wireless communication system
US2005021368024 mars 200529 sept. 2005Sony United Kingdom LimitedReceiver
US2006028559930 mars 200621 déc. 2006Futitsu LimitedReceiver for orthogonal frequency division multiplexing transmission
US200700413122 juin 200622 févr. 2007Samsung Electronics Co., Ltd.Sampling frequency offset tracking method and OFDM system using the same
Citations hors brevets
Référence
1IEEE 802.20 V14, "Draft 802.20 Permanent Document, System Requirements for IEEE 802.20 Mobile Broadband Wireless Access Systems-Version 14," IEEE Working Group 802.20, Jul. 16, 2004.
2IEEE 802.20 V14, "Draft 802.20 Permanent Document, System Requirements for IEEE 802.20 Mobile Broadband Wireless Access Systems—Version 14," IEEE Working Group 802.20, Jul. 16, 2004.
3IEEE Std 802.16-2004, "802.16: IEEE Standard for Local and Metropolitan Area Networks, Part 16: Air Interface for Fixed Broadband Wireless Access Systems," IEEE, Oct. 1, 2004.
4IEEE Std. 802.11a-1999, "Supplement to IEEE Standard for Information Technology-Telecommunications and information exchange between systems- Local and metropolitan area networks- Specific requirements- Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications: High-Speed Physical Layer in the 5 GHZ Band," IEEE, Dec. 30, 1999.
5IEEE Std. 802.11g/D2.8 (Supplement to ANSI/IEEE Std 802.11, 1999 Edition), "DRAFT Supplement to STANDARD [for] Information Technology-Telecommunications and information exchange between systems-Local and metropolitan area networks-Specific requirements-Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications: Further Higher-Speed Physical Layer Extension in the 2.4 GHz Band," IEEE, May 2002.
Référencé par
Brevet citant Date de dépôt Date de publication Déposant Titre
US819476128 mars 20085 juin 2012Shenzhen Sts Microelectronics Co.Sample clock frequency offset estimation in DRM
US2008027931328 mars 200813 nov. 2008Shenzhen Sts Microelectronics Co. LtdSample clock frequency offset estimation in DRM
US2012013439830 nov. 201031 mai 2012Intel CorporationFrequency and timing offset estimation algorithm for dtv (dvb-t2) receivers